All data will be entered in an excel database (Microsoft Inc., Richmond, WA) and will be analyzed with SPSS v21 (IBM Inc). The primary study analysis will be a Student's T-test to compare the mean differences in scores between the intervention group and the placebo group. An intention-to-treat approach will be used. Also, secondary analyses will be performed using a Student's T-test for continuous variables and a Pearson Chi-square test for categorical variables. The 95% confidence intervals will be measured for each result.